Your life consist of living in both the natural and spirit worlds. Everything that happens to you and me is the consequence of (1) something that happened, or is happening, in the natural world, in the spirit world, or in both (2) the effects of the law on one or the other, or of both worlds, (3) the results of the Cross, (4) the consequences of the acts of a specific spirit or spirits (including, of course God), and (5) our own actions or inaction (both in the physical and spiritual dimensions).
As an aside, a good example of the effect of actions in the spirit world on the natural is found in the book of Job verses 1:15-19.
For the born again Christian, the work on the cross of Calvary made a fundamental change in the very structure of our existence which resulted in a change in the function of the spiritual and natural laws, Through the Cross, we have left application of the Laws for the purpose of salvation, and we live in grace and are empowered with authority over our fallen natures, bodies and over other forms of evil and, to an extent, are given power and authority over the natural. The salvation of the cross has connected us to God and makes us heirs to all that God has for his children. It also made Him our Friend